Removal of nickel (II) ions from water by Jordan natural zeolite as sorbent material

Alabbad, Eman A.; Dwairi, Reyad A. Al

doi:10.1016/j.jscs.2021.101233

Cited by 35 publications

(29 citation statements)

References 47 publications

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“…In other words, the nickel ions adsorption on the newly prepared adsorbents mainly relies on the chemisorption process, involving chemical bonds between heavy metal and active sites. [18][19]26,38,47 The correlation coefficient value for the intraparticle diffusion model is higher than 0.97 for both proposed adsorbents, suggesting that the intraparticle diffusion is involved in the adsorption process. However, intraparticle diffusion could not be the only rate-limiting step because the diagram is not linear and deviates from the origin point.…”

Section: Fig 28 Relationship Between Adsorbents Removal Efficiency An...mentioning

confidence: 81%

“…The obtained results corroborate the data reported for the raw materials of the adsorbents prepared in this study. 19,38,42 Effect of pH The aqueous pH is the parameter with a dominant effect on the adsorption process because it influences the degree of ion chemical speciation of the adsorptive species and of the adsorbent surface. 18,27,40,[43][44][45] Therefore, in this study, the adsorption of nickel ions onto FEZ and EZ was investigated as function of pH.…”

Section: Adsorption Properties Effect Of Adsorbent Dosagementioning

confidence: 99%

“…[13][14]16,19,26,50 Various studies have reported that the adsorption isotherms of Ni(II) on eggshell or zeolite (the raw materials from which the FEZ and EZ adsorbents were prepared in this study) by the mathematical equations of Temkin and Dubinin-Radushkevich (D-R) adsorption models do not fit well the experimental results. 11,13,19,26,38,47,50 Therefore, Langmuir and Freundlich adsorption isotherms have been considered to adopt a suitable adsorption model adequate to reproduce the experimental results from this study. 49 The Langmuir model is based on the theoretical principles that i) the adsorbent has a single, homogeneous layer in which the adsorption process takes place; ii) each of the adsorbed molecules has the same adsorption energy without contact between these molecules.…”

Section: Fig 28 Relationship Between Adsorbents Removal Efficiency An...mentioning

confidence: 99%

“…After this point, boosting the adsorbent concentration leads to agglomerations that decrease the specific surface area and the active sites. 18,22,[38][39] Effect of initial concentration on nickel removal efficiency…”

Section: Adsorption Properties Effect Of Adsorbent Dosagementioning

confidence: 99%

“…The time required for the adsorption of a pollutant is a critical factor on which the cost of the adsorption process depends. 18,38,40,46 Nickel ions uptake capacities were determined as a function of contact time to establish an optimum contact time at which the adsorption capacity and pollutant removal efficiency are maximum for each of the two adsorbents studied. The results presented in Figs.…”

Section: Effect Of Contact Timementioning

confidence: 99%

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Innovative low-cost engineered adsorbents based on waste eggshell for nickel removal from aqueous solutions

Segneanu

Trușcă

Cepan

et al. 2023

Preprint

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In the current circular economy, innovation is requisite for waste reuse into new efficient materials designed to minimize pollution and conserve non-renewable natural reserves. Water pollution is a global problem with health, quality of life and food security reverberations.In this study were prepared two newly low-cost engineered adsorbents from eggshells for nickel retention from aqueous solutions. SEM results showed that, in the first adsorbent (EZ), the zeolite nanoparticles were loaded in the eggshell pores. The preparation route for the second adsorbent led to the double functionalization of the eggshell with the nano-sized particles of zeolite and simultaneously eggshell pores and zeolite surface loading with FeOOH particles. The eggshell structural modification was confirmed by the BET analysis. These features enabled the proposed adsorbents to remove nickel with high performance and adsorption capacities of 321.11 mg/g and 287.9 mg/g. The adsorption kinetics and isotherm data follow the Freundlich model (ΔG<0, ΔH<0; ΔS>0) and pseudo-second-order kinetics model. These results indicate that nickel adsorption on adsorbents is a multi-molecular layer, spontaneous and endothermic process. Subsequently, the desorption results exhibit the higher reusability of both adsorbents. This study's outcomes conclude the use of waste to design new, low-cost, and highly efficient engineered adsorbents.

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Section: Fig 28 Relationship Between Adsorbents Removal Efficiency An...mentioning

confidence: 81%

Section: Adsorption Properties Effect Of Adsorbent Dosagementioning

confidence: 99%

Section: Fig 28 Relationship Between Adsorbents Removal Efficiency An...mentioning

confidence: 99%

Section: Adsorption Properties Effect Of Adsorbent Dosagementioning

confidence: 99%

Section: Effect Of Contact Timementioning

confidence: 99%

See 3 more Smart Citations

Innovative low-cost engineered adsorbents based on waste eggshell for nickel removal from aqueous solutions

Segneanu

Trușcă

Cepan

et al. 2023

Preprint

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Influence of Different Conditions on the Sorption of Potentially Toxic Elements by Selected Sorbents: A Review

Ďuricová,

Prepilková,

Salva

et al. 2024

Mine Water Environ

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Information about how different conditions affect the course of sorption is variously scattered and needs to be consolidated. The paper primarily focuses on identifying the optimal sorption conditions for acid and neutral mine drainages. In this review, key parameters were assessed, including temperature, pH level, sorbent dose, initial metal concentrations, and sorption duration. This overview also includes a comparison of the advantages and disadvantages of selected types of sorbents. The sorption of many metals tends to be optimal at circumneutral pH values. The adsorptive capacity decreases with an increase in temperature for exothermic processes, whereas it increases in the case of an endothermic one. Increasing the initial concentration has a positive effect on adsorption until the sorbent is fully saturated, leading to a plateau in adsorption capacity. The knowledge gained from this research extends the spectrum of the potential sorption applications, especially in the processes of recovering the metals and sorbents by desorption.

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Experimental study of the sorption properties of natural zeolite-containing tripolite and their ability to purify aqueous solutions contaminated with Ni and Zn

Kolmykova

Nikashina

Korobova

2022

Environ Geochem Health

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Removal of nickel (II) ions from water by Jordan natural zeolite as sorbent material

Cited by 35 publications

References 47 publications

Innovative low-cost engineered adsorbents based on waste eggshell for nickel removal from aqueous solutions

Innovative low-cost engineered adsorbents based on waste eggshell for nickel removal from aqueous solutions

Influence of Different Conditions on the Sorption of Potentially Toxic Elements by Selected Sorbents: A Review

Experimental study of the sorption properties of natural zeolite-containing tripolite and their ability to purify aqueous solutions contaminated with Ni and Zn

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